> ## Documentation Index
> Fetch the complete documentation index at: https://developers.gonitro.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Nitro APIs

## Welcome to the Nitro APIs

Nitro APIs let you embed document automation directly into your systems, applications, and workflows. From PDF conversion, extraction, and document processing to eSigning, Nitro provides secure, scalable APIs to help teams automate document-heavy processes at scale.

### Nitro PDF Services API

Nitro’s PDF Services API allow you to automate common document tasks such as conversion, extraction, redaction, and transformation directly within your workflows.

<Accordion title="What can you do with the PDF Services API?">
  * Converting documents between formats (e.g. Word, Excel, images, PDF)
  * Extracting text, tables, form data, and metadata
  * Applying transformations such as optimization, flattening, merging, or splitting
  * Running asynchronous jobs and retrieving results programmatically
</Accordion>

### Nitro Sign API

The Nitro Sign API enables you to integrate secure, compliant electronic signature workflows into your applications or internal systems. It’s designed for enterprise-grade signing at scale, with predictable pricing and robust compliance.

<Accordion title="What can you do with the Nitro Sign API?">
  * Create signature requests: send one or more documents in an envelope for electronic signature
  * Retrieve documents: access signed or in-progress files programmatically
  * Check request status: track signature progress and trigger downstream actions
</Accordion>

<Accordion title="Why build with Nitro APIs?">
  * Embed signing and document automation directly into your existing tools, platforms, and workflows. Built on Nitro’s trusted infrastructure, supporting global standards including eIDAS, UETA, ESIGN Act, SOC 2, and ISO 27001.
  * Designed for high-volume, repeatable document workflows with predictable performance and usage-based pricing. From onboarding and API setup to troubleshooting and optimization, Nitro provides hands-on support for complex needs.
</Accordion>

## Get started with Nitro APIs

<Card title="Start here" icon="rocket" href="/getting-started/basic-setup" horizontal>
  Follow our Getting Started guide to set up the Nitro APIs access and start building
</Card>

## Resources

<Columns cols={2}>
  <Card title="API Reference" icon="terminal" href="/api-reference/changelog">
    Nitro API endpoints
  </Card>

  <Card title="Build" icon="hammer" href="/build-nitro/good-practices">
    Tutorials and in-depth documentation to assist your integration with Nitro
  </Card>
</Columns>

<Info>
  Looking for something else? If you’re looking for the Nitro Sign Enterprise Verified API, please visit [this page](https://connectivegroup.my.site.com/s/topic/0TO690000019MEKGA2/api-nitro-sign-enterprise-verified) instead, or speak to your account representative.
</Info>